VMware VIEW MANAGER 4.X - EXTENDING VIRTUAL MACHINE DELECTION WITH... Manuale utente

Technical Note

VMware, Inc. 1

Extending Virtual Machine Deletion

with Scripts

View Manager 4.x

WhenyoudeleteavirtualmachinefromtheVMware®View™environment,youmightwanttorunyourown

scriptstoremoveActiveDirectoryordatabaseentriesthatreferencethedeletedmachine.Thistechnicalnote

describeshowtoconfigureViewManagertorunsuchdeletionscriptsautomaticallywhenyoudeleteavirtual

machine.

Toenableadeletionscript,youaddanentryforthescripttotheWindowsRegistry,configuretheaccountof

theuserwhohastheappropriateprivilegestorunthescript,andenabletheVMwareViewScriptHostservice.

YoumustconfigureallViewConnectionServerhoststhatneedtorundeletionscripts.Thereisnomechanism

topropagateregistrychanges,VMwareViewScriptHostserviceconfigurationchanges,anddeletionscripts

betweenViewConnectionServerhosts.

Environment Variables

Deletionscriptscannotruninteractively.AdeletionscriptrunsinanenvironmentcreatedbyViewManager,

andthescriptmustobtainitsinputdatafromthisenvironment.Table 1showstheenvironmentvariablesthat

youcanuse.Youshouldensurethatadeletionscriptvalidatestheexistenceofanyenvironmentvariablethat

ituses.



ThefollowingVisualBasiccodefragmentshowshowtoaccesstheenvironmentvariablefortheMACaddress

ofthefirstnetworkinterfaceofavirtualmachinethatisbeingdeleted.

Dim shell

set shell = WScript.CreateObject( "WScript.Shell" )

macAddr0 = shell.ExpandEnvironmentStrings("%VDM_DeleteVm_VmMac.0%")

Table 1. Environment Variables for Deletion Scripts

Environment Variable Description

VDM_DeleteVm_VmName Nameofthevirtualmachinebeingdeleted.

VDM_DeleteVm_VmDnsName DNSnameofthevirtualmachinebeingdeleted.

VDM_DeleteVm_VmDn Distinguishednameofthevirtualmachinebeingdeleted.

VDM_DeleteVm_VmPath PathintheVMwarevCenter™serverthatmanagesthevirtualmachinebeingdeleted.

VDM_DeleteVm_PoolDn Distinguishednameofthepoolthatcontainsthevirtualmachinebeingdeleted.

VDM_DeleteVm_VcDn DistinguishednameofthevCenterserverthatmanagesthevirtualmachinebeingdeleted.

VDM_DeleteVm_VmMac.<N> MACaddressforthenetworkinterfacenumberofthevirtualmachinebeingdeleted.

VDM_DeleteVm_Error Stringthatdescribesaproblemthatoccurredwhiledeletingthevirtualmachine.

VMware, Inc. 2

Extending Virtual Machine Deletion with Scripts

Thenextexampleshowshowyoucouldextractthenameofthevirtualmachine,andusethisvaluetodelete

thecorrespondingentryfromActiveDirectory.

Dim shell

set shell = WScript.CreateObject( "WScript.Shell" )

set vmName = shell.ExpandEnvironmentStrings("%VDM_DeleteVm_VmName%")

set machineObj = GetObject("LDAP://CN=" & vmName & ",CN=Desktops,DC=MYDOMAIN,DC=COM")

machineObj.DeleteObject(0)

ThisexampleassumesthatthescriptrunswiththeadministrativerightstoupdateentriesinActiveDirectory.

YoumustmodifythescripttocorrespondtotheconfigurationofyourlocalsystemsinActiveDirectory.

Add a Windows Registry Entry for a Deletion Script

Tomakeadeletionscriptavailableforexecution,youmustaddittotheWindowsregistry.Youmustcreatean

entryoneachViewConnectionServerinstancewhereyouwantViewManagertorunthedeletionscriptwhen

youdeleteavirtualmachine.

To add an entry for a deletion script to the registry on a View Connection Server instance

1StarttheWindowsRegistryEditorbyenteringregeditatthecommandprompt.

2Intheregistry,navigatetoHKLM\SOFTWARE\VMware, Inc.\VMware VDM\ScriptEvents.

3Inthenavigationarea,right‐clickScriptEvents,selectNew>Key,andcreateakeynamedDeleteVm.

4Inthenavigationarea,right‐clickDeleteVm,selectNew>StringVa l ue,andcreateastringvaluethat

identifiesthedeletionscripttoberun.

Torunmorethanonedeletionscript,createastringvalueentryforeachscriptundertheDeleteVmkey.

Youcannotspecifytheorderinwhichthesescriptsrun.Ifthescriptsmustruninaspecifiedorder,invoke

themfromasinglecontrolscript.

5Inthetopicarea,right‐clickontheentryforthenewstringvalue,andselectModify.

6InValue data,enterthecommandlinethatinvokesthedeletionscript,andclickOK.

Specifythefullpathofthedeletionscriptandanyfilesthatitrequires.

7IfyouwanttheVMwareViewScriptHostservicetotimeoutthedeletionscript,rightclickontheDefault

key,selectModify,enterthetimeoutvalueinmilliseconds,andclickOK.

8ExittheRegistryEditor,andrestartthesystem.

Configure the VMware View Script Host Service

YoumustconfiguretheVMwareViewScriptHostserviceoneachViewConnectionServerinstancewhereyou

wantViewManagertorunthedeletionscript.Bydefault,theVMwareViewScriptHostserviceisdisabled.

To configure the VMware View Script Host service

1StarttheWindowsServicestoolbyenteringservices.mscatthecommandprompt.

2Inthedetailspane,right‐clickontheVMwareViewScriptHostserviceentry,andselectProperties.

3OntheGeneraltab,inStartuptype,selectAutomatic.

4Ifyoudonotwantthelocalsystemaccounttorunthedeletionscript,selectThisaccount,andenterthe

detailsoftheaccounttorunthedeletionscript.

5ClickOK,andexittheServicestool.

CAUTIONRunningadeletionscriptunderthelocalsystemaccountcouldcompromisethesecurityoftheView

ConnectionServerhost.Ifyouconfigureanaccountotherthanthelocalsystemaccounttorunadeletionscript,

verifythattheaccounthasreadpermissionontheregistrykeyforthescript.Youshouldalsolimitthe

administrativerightsofadeletionscripttothoserightsthatallowittoperformitsfunction.

Extending Virtual Machine Deletion with Scripts

If you have comments about this documentation, submit your feedback to: [email protected]

VMware, Inc. 3401 Hillview Ave., Palo Alto, CA 94304 www.vmware.com

one or more patents listed at http://www.vmware.com/go/patents. VMware is a registered trademark or trademark of VMware, Inc. in the United States and/or other

jurisdictions. All other marks and names mentioned herein may be trademarks of their respective companies.

Item: EN-000286-02

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